If you can’t fasten your seatbelt due to excessive weight, it may not be safe for you to fly

You are overweight

For safety reasons, airlines require passengers to buckle up before take off and landing.

Delta Airlines, for one, has a clause in its contract of carriage which therefore states that passengers must be able to fit in the seatbelt restraint to be allowed to fly.

It is also up to staff’s discretion whether or not a traveller should be removed “when the passenger’s conduct creates an unreasonable risk of offense or annoyance to other passengers.”

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Dressing proactively or not adhering to the dress code

Only this week an 18-strong hen do had to be kicked off a plane set for Magaluf because staff said their t-shirts were too “offensive”.

The party were all seen donning black t-shirts with pink writing which read: “Bitches On Tour”.

It is claimed that despite repeated requests for the women to change their tops, staff were ignored.

A Jet2 spokesman said: “At check-in for our East Midlands to Majorca flight, a group of passengers were reminded of our Onboard Together policy and told that they would not be permitted to fly with us whilst wearing t-shirts which displayed offensive language.”

United Airlines was at the centre of a sexism storm in March, after refusing to let a ten-year-old girl board a flight because she was wearing leggings.

The airline defended their right to refuse a passenger entry based on clothing.

If you have a severe nut allergy you may have to disclose this to airline staff

Being allergic to nuts

Last year a furious mum claimed Emirates kicked her six-year-old son off a plane for having a life-threatening nut allergy because the pilot “didn’t want a death on his flight”.

Emirates claims they did inform the family that the flight wasn’t nut-free before they got on the plane.

A spokesperson said: “On learning the severity of Chester’s allergy and potential risk to his life should he come into even secondary contact with nuts, the on-board team had no other option than to ask him to disembark the aircraft.”